On 5/22/19 4:12 PM, Johannes Lundberg wrote: > On 5/22/19 3:02 PM, Conrad Meyer wrote: >> On Wed, May 22, 2019 at 1:58 PM Johannes Lundberg <johalun_at_freebsd.org> wrote: >>>> It seems, a single '>' will cause it to try to create the file (even >>>> though it already exists) and that fails (kern_openat). >>>> >>> I would guess because of >>> >>> https://github.com/freebsd/freebsd/blob/master/sys/fs/pseudofs/pseudofs_vnops.c#L1042 >>> >>> struct vop_vector pfs_vnodeops = { >>> ... >>> .vop_create = VOP_EOPNOTSUPP, >>> ... >>> } >> kern_openat -> vn_open(_cred) should only call VOP_CREATE if namei() >> cannot find the named vnode (ni_vp == NULL). Otherwise, it should >> just invoke VOP_OPEN. This suggests there might be a lookup bug in >> pfs? Tracing VOPs as Mark suggested seems like a good next step. >> >> Best, >> Conrad > Thanks Conrad. Yeah, that makes sense that it would open instead of > recreating. Tracing a'la Mark points to > > vop_getwritemount > > failing. Actually vop_setattr also shows up in dtrace. I'll continue digging.. > >Received on Wed May 22 2019 - 21:18:04 UTC
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